Domain Overview
DNS: ✓ 2mo ago
Checker: ✓ 2mo ago
21cc.co.jp
Yes
✓ Yes
Unknown
No
No
⚠ Yes
No
No
Did you mean: [email protected]
Checked via [email protected]
· 2026-03-18 22:11:34 UTC · ↺ Refresh
MX Hostnames
- wxa101.wadax-sv.jp
MX Priorities
- wxa101.wadax-sv.jp: 10
A / AAAA Records
- 153.123.7.34 ↩ wx101.wadax-sv.jp
Mail Server IPs
- 153.123.7.2 ↩ wxa101.wadax-sv.jp
SOA Record
Raw SOA
wx101.wadax-sv.jp postmaster.21cc.co.jp 2025101504 10800 3600 1209600 10800
Primary NS (mname)
wx101.wadax-sv.jp
Admin Email (rname)
postmaster@21cc.co.jp
Serial
2025101504
Refresh
10800s
Retry
3600s
Expire
1209600s
Minimum TTL
10800s
Nameservers (NS)
nswx101.wadax-sv.jp
wx101.wadax-sv.jp
SPF Record
✓ Soft Fail (~all)
v=spf1 +ip4:153.123.7.34 +include:_spf-sd.wadax-sv.jp +mx include:treasure-ship.jp include:spf1.bcart.jp include:u826348.wl.sendgrid.net ~all
📊 DNS lookups: 5/10
~ Soft fail (~all) — moderate enforcement
DMARC Record
✗ p=none
v=DMARC1; p=none; rua=mailto:[email protected]
⚠ p=none — monitoring only, no enforcement
📋 SPF alignment: Relaxed
· DKIM alignment: Relaxed
📧 Reports → mailto:[email protected]
DKIM Selectors
✓ 1 found
default._domainkey
✓ Public key: 216 chars (valid)
✓ DKIM properly configured for selector: default
Checked: google, selector1/2, default, mail, dkim, k1, s1/2, zoho, sendgrid, mxvault, amazonses
All TXT Records
1 record- SPFv=spf1 +ip4:153.123.7.34 +include:_spf-sd.wadax-sv.jp +mx include:treasure-ship.jp include:spf1.bcart.jp include:u826348.wl.sendgrid.net ~all
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